| Abbreviation | Definition |
|---|---|
| AR | Advance Retard |
| AR | Advanced Ring |
| AR | Adventure Racing |
| AR | Affix Rule |
| AR | Aged Residue |
| AR | Alan Rickman |
| AR | Algae Resistant |
| AR | All The Right |
| AR | Allah Rakah |
| AR | Allah Rakha |
| AR | Alphonso Rules |
| AR | Alternate Reality |
| AR | American Renegades |
| AR | American Roadster |
| AR | Andrew Riverside |
| AR | Anime Reactor |
| AR | Anna Regina |
| AR | Anna Rose |
| AR | Annihilation Radiation |
| AR | Anse Royale |